Plug Power (PLUG) Options Chain

NASDAQ: PLUGEnergyIndustrial Machinery/ComponentsUSD

1.68-0.05 (-2.89%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

Expiration date

Expiration: Dec 18, 2026
Days to expiration: 69
Share price: $1.68
Put/call ratio (OI): 0.65
Put/call ratio (volume): 0.22
ATM implied volatility: 72.3%
Expected move: ±$0.5279
Open interest (C / P): 61.17K / 39.89K

PLUG options summary

The PLUG options chain for the December 18, 2026 expiration lists 12 call and 12 put contracts, with 69 days until expiration. Open interest stands at 61,168 calls and 39,888 puts, a put/call ratio of 0.65, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $1.50 strike is 72.3%, which implies the market expects a move of about ±$0.5279 (31.4%) in Plug Power stock by expiration.

The most open interest sits at the $4.00 call (17.70K contracts) and the $2.00 put (27.81K contracts).

Summary generated from market data by MetaCap's automated system. Methodology

PLUG options chain · December 18, 2026

PLUG calls and puts by strike price. Shaded cells are in the money.
Calls							Puts
OI	Vol	IV	Last	Bid	Ask	Strike	Bid	Ask	Last	IV	Vol	OI
78	1	350.0%	1.25	0.70	1.95	0.50	0.00	0.01	0.01	137.5%	1	56
483	1	118.8%	0.75	0.60	0.87	1.00	0.00	0.02	0.03	75.0%	11	338
745	10	85.2%	0.33	0.31	0.36	1.50	0.06	0.12	0.11	59.4%	136	1,977
PLUG $1.68
3,328	32	79.7%	0.13	0.12	0.13	2.00	0.40	0.44	0.41	70.3%	52	27,811
7,806	97	89.8%	0.07	0.06	0.07	2.50	0.79	0.90	0.85	67.2%	7	4,228
7,184	817	95.3%	0.04	0.03	0.04	3.00	1.25	1.52	1.25	113.3%	1	4,384
9,805	138	104.7%	0.03	0.02	0.03	3.50	1.67	2.10	1.65	131.3%	30	954
17,705	1	118.8%	0.02	0.02	0.03	4.00	0.50	4.40	2.05	178.9%	3	91
3,380	5	150.0%	0.02	0.01	0.09	4.50	1.51	2.92	2.42	178.1%	1	45
3,102	52	134.4%	0.02	0.01	0.03	5.00	1.17	4.00	2.82	402.3%	8	4
2,628	1	168.8%	0.02	0.00	0.10	5.50	0.00	0.00	3.26	—	1	0
4,924	10	143.8%	0.02	0.00	0.03	6.00	2.17	4.80	3.92	354.7%	1	0

In-the-money callsIn-the-money puts. IV = implied volatility, OI = open interest (contracts). Each contract covers 100 shares. Quotes delayed at least 15 minutes.

Frequently asked questions

What is the PLUG put/call ratio?

For the December 18, 2026 expiration, the PLUG put/call ratio based on open interest is 0.65 (39,888 puts vs 61,168 calls), and 0.22 based on today's volume. A ratio above 1 means more puts than calls.

What is PLUG's implied volatility?

At-the-money implied volatility for PLUG options expiring December 18, 2026 is about 72.3%, an annualized estimate of how much the market expects Plug Power stock to move.

How many PLUG option expiration dates are there?

PLUG has 11 listed expiration dates, from Oct 16, 2026 to Jan 19, 2029.

What does "in the money" mean?

A call is in the money when the strike price is below the current share price; a put is in the money when the strike is above it. In-the-money contracts have intrinsic value and are shaded in the table.